( 53 ) VI. 0)1 the classification oftJie Geometriua of the European fauna. By EdwaPwD Meyrick, B.A., F.Z.S. [Read February 10th, 1892.] Plate III. The general principles on which this paper is based are the same which I have employed in my paper on the classification of the Pyralidina (Trans. Ent. Soc. Loud., 1890, 429), and the introductory remarks which I have made there must be taken to apply here also. Those species marked with an asterisk (*) I have not been able to examine critically in respect of structure, though in some instances I have seen specimens of them. I have not thought it necessary to attempt to give a complete catalogue of European described species, but those which I have omitted are either probably of doubt-ful specific value, so far as can be judged from the descriptions, or are so unsatisfactorily characterised that there is no clue to their affinity ; hence only con-fusion would have resulted if I had attempted to place them, and in no instance is the value of any generic name affected. GEOMETRINA. Ocelli usually obsolete, but sometimes present. Tongue visually well-developed. Maxillary palpi obsolete. Fore wings with vein 1 b usually furcate, but lower fork more or less slender or tending to be obsolete, 5 rising not nearer to 4 than to 6, 7 and 8 out of 9 (7 apparentljr but not reallj' separate in Catachjsme), 10 and 11 usually variously anastomosing, 11 from beyond middle of cell. Hind wings with frenulum developed, 1 c obsolete, 5 widely remote from 4, sometimes obsolete {Selidosemidcc) , 6 and 7 stalked or approxim-ated at base, 8 connected with or closely approximated to cell near base, thence diverging or anastomosing with or closely approxim-ated to cell to near or beyond middle, or rarely to beyond origin of 7, occasionally connected with cell beyond middle. The group is closely related to the Notodontidcn ; so TRANS. ENT. SOC. LOND. 1892. PART I. (MARCH.)
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